e3d958c0be09c74f6ae0a947388ad2a52be5d149fa682badcbb24338fb0edc38

Analysis

max time kernel
121s
max time network
131s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 09:10

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General

Target
icudtl.dat
Size 10.2MB
Sample240509-k5e45aab91
SHA256 f5170aa2b388d23bebf98784dd488a9bcb741470384a6a9a8d7a2638d768defb
MD5 e0f1ad85c0933ecce2e003a2c59ae726
SHA1 a8539fc5a233558edfa264a34f7af6187c3f0d4f
SHA512 714ed5ae44dfa4812081b8de42401197c235a4fa05206597f4c7b4170dd37e8360cc75d176399b735c9aec200f5b7d5c81c07b9ab58cbca8dc08861c6814fb28
SSDEEP 196608:hpgPBhORiuQwCliXUxbblHa93Whli6Z86WOH:n8wkDliXUxbblHa93Whli6Z8I
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\dat_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.dat	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\.dat\ = "dat_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\dat_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\dat_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\dat_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\dat_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\dat_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2496	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2496	AcroRd32.exe
2496	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2640	2072	cmd.exe	29
PID 2072 wrote to memory of 2640	2072	cmd.exe	29
PID 2072 wrote to memory of 2640	2072	cmd.exe	29
PID 2640 wrote to memory of 2496	2640	rundll32.exe	30
PID 2640 wrote to memory of 2496	2640	rundll32.exe	30
PID 2640 wrote to memory of 2496	2640	rundll32.exe	30
PID 2640 wrote to memory of 2496	2640	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\icudtl.dat
1⤵
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\icudtl.dat
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\icudtl.dat"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2496

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

SharedDataEvents

Path C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents
Size 3KB
SHA256 a0dc9e984d64076eaa29036e7cd667acd3a5b68335ad08fe78576f4c71285938
MD5 e5777562d45c49d69a562a8483560110
SHA1 9cd6bb862d8c60866d84a0d51cdd37ce4940b480
SHA512 15341029f1726f607c8a93b1ffa896ad00d70a8d0f19820f189c94efa8b7518e010a0e2377e0d1cccf5aa6fde585baa4f4cbe6b131ce77c2e39cc0e070dca2bd
MD5 SHA1 SHA512

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